Method of repairing pneumatic-tire covers



F. W. FARR. METHOD OF REPAIRING PNEUMATIC TIRE COVERS.

APPLICATI ONT'TILE D JUNE I0. 1914- Patented ]i eb.17,1920.

[ nae 17% FREDERICK WILLIAM FARR, 0F NORTHAMPTON, ENGLAND.

METHOD OF REPAIRING PNEUMATIC-TIRE COVERS.

ea s-55.

Specification of Letters Patent.

' Patented Feb. 17, 1920.

Application filed .Tune 10, 1914. Serial No. 844,378.

To all whom it may concern:

Be it known that I, FREDERICK l/VILLIAM FARR, a subject of the Emperor of Germany, and resident of Northampton, England, have invented certain new and useful Improvements in Methods of Repairing Pneu matic-Tire. Covers, of which the following is a specification. i

This invention relates to the repair or reclaiming o f worn covers of pneumatic tires, as used on motor cars, cycles and the like.

Hitherto cast-off pneumatic tire covers as used on motor cars, cycles'and the like have been reclaimed by cutting the beads off one (generally such as have the beads broken, or burst at the sides) and placing it over another, having good beads, and securing the two to ether by means of rivets, or sewing, the sald rivets or sewing being both on the outer surface, or open to View on the added cover, and also on the surface of casing of under cover. Among the disadvantages of securing them together in this manner may be mentioned the rubbing of the stitches, and the, bad effect of the varied weather conditions, on the sewing threads or fastenings, by rotting and the like, he sides which the crude method of stitching two covers together one above the other is objectionable to most motorists.

cover the result being that the two covers are more flexible and stronger through the protection given besides which, when on thecar', they look very near in appearance to a single cover.

Figure 1, in the accompanying drawings represents a section of two pneumatic tire covers secured together by means -of two rows of sewing. a is the bottom cover, with beads a. b is the top or added cover, 6 is the rubberv surface, being part of added cover I). b the points from which the beads have been removed. 0 shows top two layers (71. e. surface rubber and canvas 'to which it is adhered) of added cover I) separated up to point 0 which is held back to enable the sewing process to be carried out. 0 is the remaining portion of added cover I), which has been sewn, and the separated layer or layers 0 replaced and vulcanized down in their original position, forming a combine invisibly stitched on the outside. al shows the stitches visible on the inside of bottom cover.'

Fig. 2, represents another section of two pneumatic tire covers sewn together. 9 shows one ply of the casing inside bottom cover, separated and held back in order that the two covers maybe secured together by means of sewing as at d. The separated ply of canvas 9 is then replaced in its former position by cementing or vulcanizing thus producing invisible stitching inside.

What I claim, is

A pneumatic tire comprising two casings each composed of layers'of fabric and rubber; said casings being arranged one within the other and stitched together, said stitches extending through the sublayers and being covered and concealed by the surface layers of the casings, said surface layers and stitches being vulcanized in lace. p FREDERICK WILLIAM FARR.

Witnesses:

W. GEO. HILL, F. TAPSOOTT. 

